asyncio: Fix BaseSelectorEventLoopTests (GH-4595) (#4599)

Currently, two tests fail with PYTHONASYNCIODEBUG=1 (or using -X
dev).
(cherry picked from commit 92f9339a58a613a56683510499509d1b702921a8)

diff --git a/Lib/test/test_asyncio/test_selector_events.py b/Lib/test/test_asyncio/test_selector_events.py
index a3d118e18812f28e4d108872682b7075d739d80d..3477573ec3e7df535d6d324c66978fb0c1db23e8 100644 (file)
--- a/Lib/test/test_asyncio/test_selector_events.py
+++ b/Lib/test/test_asyncio/test_selector_events.py
@@ -188,6 +188,7 @@ class BaseSelectorEventLoopTests(test_utils.TestCase):
         sock = mock.Mock()
         sock.fileno.return_value = 10
         sock.recv.side_effect = BlockingIOError
+        sock.gettimeout.return_value = 0.0
 
         self.loop.add_reader = mock.Mock()
         self.loop.remove_reader = mock.Mock()
@@ -268,6 +269,7 @@ class BaseSelectorEventLoopTests(test_utils.TestCase):
         sock = mock.Mock()
         sock.fileno.return_value = 10
         sock.send.side_effect = BlockingIOError
+        sock.gettimeout.return_value = 0.0
 
         self.loop.add_writer = mock.Mock()
         self.loop.remove_writer = mock.Mock()